/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraRendererProperties.h
int32 GetDynamicParameterChannelMask ( const [FVersionedNiagaraEmitterData](API\Plugins\Niagara\FVersionedNiagaraEmitterData) * EmitterData, [FName](API\Runtime\Core\UObject\FName) BindingName, int32 DefaultChannelMask ) const